Eraser is an advanced security tool (for Windows), which allows you to completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns. (GPL)
Windows
FreeFileSync is an Open-Source folder comparison and synchronization tool. It is optimized for highest performance and usability without restricted or overloaded UI interfaces. (GPL)
Windows
TestDisk is a powerful free data recovery software! It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again. (GPL)
Linux - FreeBSD - Windows - MAC OS X
WinDirStat is a disk usage statistics viewer and cleanup tool for Microsoft Windows. (GPL)
Windows
WinMerge is an Open Source visual text file differencing and merging tool for Windows. (GPL)
Windows
5 applications